EP 0134412 A1 19850320 - Lubricated magnetic record disk and a process for making it.
Title (en)
Lubricated magnetic record disk and a process for making it.
Title (de)
Geschmierte Magnet-Aufzeichnungsplatte und Verfahren zu deren Herstellung.
Title (fr)
Disque magnétique d'enregistrement lubrifié et son procédé de fabrication.
Publication
Application
Priority
US 51389783 A 19830714
Abstract (en)
[origin: US4542071A] A magnetic disk is lubricated by being overcoated first with a permanently bound monolayer of silica spheres about 7 nm in diameter and on top of said monolayer a skin-like film of amorphous silica about 2 to 13 nm thick.
IPC 1-7
IPC 8 full level
C10M 103/00 (2006.01); G11B 5/64 (2006.01); G11B 5/66 (2006.01); G11B 5/71 (2006.01); G11B 5/72 (2006.01); G11B 5/725 (2006.01); C10N 40/18 (2006.01)
CPC (source: EP US)
G11B 5/71 (2013.01 - EP US); G11B 5/725 (2013.01 - EP US)
Citation (search report)
- [A] US 4268369 A 19810519 - BARLOW MALCOLM, et al
- [A] US 3476595 A 19691104 - NACCI GEORGE RAYMOND
- [AP] EP 0101080 A1 19840222 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [AD] US 4280918 A 19810728 - HOMOLA ANDREW M, et al
- [AD] US 2855366 A 19581007 - ALLAN MANTEUFFEL, et al
- [A] PATENT ABSTRACTS OF JAPAN, vol. 6, no. 212, 26 October 1982; & JP-A-57-117127 (HITACHI SEISAKUSHO K.K.) 21-07-1982
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0134412 A1 19850320; EP 0134412 B1 19870114; DE 3462076 D1 19870219; JP H0245242 B2 19901008; JP S6020317 A 19850201; US 4542071 A 19850917
DOCDB simple family (application)
EP 84106067 A 19840528; DE 3462076 T 19840528; JP 4944784 A 19840316; US 51389783 A 19830714